that the land vomit not you out also, when ye defile it, as it vomited out the nation that was before you.

So if you defile the land, it will vomit you out as it spewed out the nations before you.

and the land doth not vomit you out in your defiling it, as it hath vomited out the nation which is before you;

that the land vomit you not out, when ye make it unclean, as it vomited out the nation that was before you.